Citazione Stile APA (7a Edizione)
Walker, H. M. (1931). Studies in the history of statistical method: With special reference to certain educational problems. Wiliams and Wilkins Co.
Citazione stile Chigago Style (17a edizione)
Walker, Helen M. Studies in the History of Statistical Method: With Special Reference to Certain Educational Problems. Baltimore: Wiliams and Wilkins Co, 1931.
Citatione MLA (9a ed.)
Walker, Helen M. Studies in the History of Statistical Method: With Special Reference to Certain Educational Problems. Wiliams and Wilkins Co, 1931.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.